Grade 12th passMagical Mathematics[Interesting Approach]
The power of 3 of any index. The repetition of unit digits
1 Answer
ARKADEEP DAS
see sekhar
its nice for having law of indices
now we know 3^1=3
3^2=9
3^3=27
3^4=81
now again 3^5= 243
so we have repaeted unit’s digit after interval of 3 such that every 4th term has same unit’s place
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